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Exercises Numbers, fractions and percents

Example 1.42 from Prealgebra, 1.4 Multiply Whole Numbers

Multiply Whole Numbers: example 1.42

Multiply:

ⓐ $(11) 1$
ⓑ $1 \cdot 42$

Work it out on paper first. Then open the solution one step at a time, and stop as soon as you can finish on your own.

Solution

ⓐ $(11) 1$

The product of any number and one is the number. $11$

ⓑ $1 \cdot 42$

Multiplying by one does not change the value. $42$

Your turn

The book's Try It right after this example: same idea, new numbers. Only the answer is given.

Find each product:

ⓐ $(19) 1$
ⓑ $1 \cdot 39$

How did it go?

PreviousMultiply Whole Numbers: example 1.41 Next Multiply Whole Numbers: example 1.43

From Prealgebra (1st edition) by OpenStax (Rice University), section 1.4, licensed under CC BY 4.0. Original at openstax.org. We split the solution into steps; the words, numbers and figures are the book's. OpenStax doesn't endorse this site.